CodeChef: A Platform for Aspiring Programmers

CodeChef was created as a platform to help programmers make it big in the world of algorithms, computer programming and programming contests. At CodeChef, we work hard to revive the geek in you by hosting a programming contest at the start of the month and another smaller programming challenge in the middle of the month.

About CodeChef July Lunchtime 2017:

CodeChef Lunchtime is a three hours coding contest where you can show off your computer programming skills.

Contest Details:

Eligibility Criteria: Anyone with a knack for Programming :P

Our contests are open to all the programmers across the globe.

What's in it for you?

The idea behind these programming contests is that we want you to learn while competing. Also we believe that it is alright to refer to tutorials, books and other materials, learn a concept and then apply the same to solve a problem during a contest. But it is not alright to copy other people's solutions or seek other people's help to solve a problem without understanding it. The dividing line may seem to be thin but it can be captured by the spirit of learning. If whatever you are doing is making you learn while you do so, we tend to believe that it is alright. However, all the participants are expected to abide to CodeChef Code Of Conduct

Not just that, as a token of motivation we also give away cash prizes and goodies to the winners of the contest. You can know more about prizes here. However, our sole intention lies in making our users learn new concepts while competing.

For Indians:

Top 10 school students from ranklist will get CodeChef laddus

For Rest of World:

Top 10 school students from ranklist will get CodeChef laddus

With CodeChef laddus, the winners can claim cool CodeChef goodies. Know more here: https://www.codechef.com/laddu. In addition to it an appreciation certificate will also be provided to the winners.

Please do not discuss strategy, suggestions or tips in the comments during a live contest. Posting questions clarifying the problem statement is ok. If you are unsure, email us at feedback@codechef.com .

Discussing CodeChef's problems or any aspect of problem, on any other platform on web, on identification, could lead to disabling of respective account and banning from the community.

Note: You can now "Code, Compile, and Run" your codes on our newly launched Online IDE.

However, if you are using any other online development environment, make sure that other contestants don't have access to your code. As a contestant, you are responsible for making sure others don't access the code that you submit. If you use Ideone, make sure to mark your submission "private" (not secret)".

Announcements

07/31/2017: There is a delay from our end in calculating the ratings of July Lunchtime 2017. We regret the inconvenience caused to you.

22:07 IST: LOSTMAX rejudge is also over now. We are very sory the the trouble.

21:04 IST: Due to the issues with testdata and rejudging, the contest is being extended by 30 minutes. It will end at 23:00 IST.

20:54 IST: DIVSET rejudge is over. LOSTMAX is still being rejudged.

There were some extra spaces at the end of the line in the testdata of DIVSET. It has been fixed, and all submissions will be rejudged soon.

There is a mistake in the testdata of LOSTMAX, and it will be corrected soon. All submissions will be rejudged after that.

CodeChef was created as a platform to help programmers make it big in the world of algorithms, computer programming and programming contests. At CodeChef we work hard to revive the geek in you by hosting a programming contest at the start of the month and another smaller programming challenge in the middle of the month. We also aim to have training sessions and discussions related to algorithms, binary search, technicalities like array size and the likes. Apart from providing a platform for programming competitions, CodeChef also has various algorithm tutorials and forum discussions to help those who are new to the world of computer programming.

Try your hand at one of our many practice problems and submit your solution in a language of your choice. Our programming contest judge accepts solutions in over 35+ programming languages. Preparing for coding contests were never this much fun! Receive points, and move up through the CodeChef ranks. Use our practice section to better prepare yourself for the multiple programming challenges that take place through-out the month on CodeChef.

Here is where you can show off your computer programming skills. Take part in our 10 day long monthly coding contest and the shorter format Cook-off coding contest. Put yourself up for recognition and win great prizes. Our programming contests have prizes worth up to INR 20,000 (for Indian Community), $700 (for Global Community) and lots more CodeChef goodies up for grabs.